Events

F. LEFEUVRE, Team Leader
P. BESPALOV
E. BLANC
T. BURINSKAYA
F. FORME
M. FULLEKRUG
C. HANUISE
R. HORNE
U. INAN
V. KRASNOSELSKIKH
A. LECACHEUX
M. MOGILEVSKY
T. NEUBERT
M. PARROT
J.L. PINCON
J.L. RAUCH
O. SANTOLIK
J.A. SAUVAUD
J. SOUCEK

OUTPUT

The main outputs of the first meeting for the TARANIS mission are summarized in this PDF document.

EVOLUTION OF THE SCIENTIFIC OBJECTIVES

Evolutions in the scientific objectives are due to:

    + More accurate definitions of the scientific objectives, with sub-objectives common to thematics previously defined
    + Priority to measurements which are known to be possible (identification of Lightning induced Electron Precipitations) as regards to measurements the feasibility of which has not been demonstrated (detection of runaway electrons)
    + Interest for the study of the atmosphere - ionosphere - magnetosphere coupling to track the variability of the radiation belts and to point out the role of low-altitude sources on the radiation belt (+ opportunity of the presence of equatorial satellites in the same time period)

SUMMARY OF ACTIONS

    + Write a common ASIM/TARANIS document showing complementarities and roadmaps.
    + Adjust the latitude coverage to allow (non-systematic observations) up to 67° Invariant Latitude.
    + Accomodate the LF electric antenna in such a way that EM signatures of bursts (10-100 ms) of Quasi-Electriostatic (QE) be visible.
    + Base the Event mode on the capture of bursts of TLEs, TGFs and LEPs (taking into account the shift of EM emissions towards higher L values for L<4).
    + For each experiment define:
          (a) what is 'an event',
          (b) what is the required resolution time to identify it,
          (c) what is the time interval needed to collect it.
    + Develop on-board processing to increase resolution times and collecting times without increasing the data rate (examples: MCM transmitted images, k vectors in the VLF band, ...).
    + Examine complementarities between X-ray and electron measurements foir the detection of precipitated electrons.
    + Adjust each experiment to the Event and Survey Modes format proposed by LPCE.
    + Investigate the possibility of implementing a neural network for mapping the inner magnetosphere.
    + Use Nacay radiotelescope (Decameter) plus VLF antenna to point out potential signatures of EM waves associated with cosmic rays, compare with models (R. Roussel-Dupré, M. Fullejrug).
    Use DEMETER data to test:
          - the detection of the parent lightning of TLEs and TGFs and potential other signatures in the ELF and VLF bands,
          - the detection of LEPs and the identification of the parent lightning,
          - the detection of bursts of QE field and the estimation of charge moment,
          - the derivation of Ne from LHR and/or UHR (at least around the trough region).
    + Investigate the possibility of a TM reception at Stanford.